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@@ Long-persistent phosphorescent (LPP) materials have long been of great interests due to their applications as various displays and signing in dark environments. Some oxide persistent phosphors exhibiting high brightness of blue and green phosphorescence with better chemical stability over sulfides are commercially available. However, commercial red oxide LPP phosphors with long persistence time are still hard to be achieved.long-persistent phosphorescent, red LLP phosphor, blue LLP phosphor, Ca2SnO4